All of our products are custom made to order so it is very important that you follow our measuring and installation instructions. When you follow our instructions we guarantee your blinds will fit perfectly! It is equally important that you review your email order confirmation for accuracy. Of course we realize that mistakes may occur and if we make a mistake on your order we will either repair or remake it at no charge to you. If you make a mistake in measuring or ordering please  contact us. Depending on the type of error you may return the product to the factory for alteration or we will have it remade at a discount.